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<title>Configuring the iBMC Time</title>
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<h1 class="topictitle1">Configuring the iBMC Time</h1>
<div id="body8662426"><div class="section" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_section14171831018"><h4 class="sectiontitle">Context</h4><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p141901691412">The iBMC time configuration affects only the iBMC time system.</p>
</div>
<div class="section" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_section7698151215512"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_ol11430185918359"><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232618_li3061316"><span>Choose <span class="uicontrol" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_uicontrol1875213114583"><b>iBMC Settings &gt; Time Zone &amp; NTP</b></span>.</span><p><div class="fignone" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_fig2085712116559"><span class="figcap"><b>Figure 1 </b>Time zone &amp; NTP</span><br><span><img id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_image165731312165814" src="en-us_image_0000002165355616.png"></span></div>

<div class="tablenoborder"><a name="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_table66002877"></a><a name="en-us_topic_0000001829822749_en-us_topic_0223232640_table66002877"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_table66002877" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Time zone &amp; NTP</caption><colgroup><col style="width:30.080000000000002%"><col style="width:69.92%"></colgroup><thead align="left"><tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_row28703987"><th align="left" class="cellrowborder" valign="top" width="30.080000000000002%" id="mcps1.3.2.2.1.2.2.2.3.1.1"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_p43321623">Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="69.92%" id="mcps1.3.2.2.1.2.2.2.3.1.2"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_p19390538">Description</p>
</th>
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</thead>
<tbody><tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_row27129783"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_p50028804">Time Zone</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p39611421475">Time zone of the iBMC.</p>
<p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p1596124204710">The time zone information consists of <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b1963514813294">Region</strong> and <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b663718110290">Time Zone</strong>.</p>
<p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p14961342114720">The default values are <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b1474119102914">Others</strong> and <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b1242112142919">UTC</strong>.</p>
<div class="note" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_note19643524"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_ul253718515485"><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li85374517484">If you select <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b1729111543017">Automatically obtain IPv4 address</strong>, you do not need to set the time zone.</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li135375544818">In the time zones that use daylight saving time (DST), the iBMC time automatically adjusts the time one hour forward when the DST starts, and adjusts the time one hour backward when the DST ends.</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li1074832311486">When performing time synchronization in the OS, run the <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b7764533104911">hwclock --utc -w</strong> command to ensure that the OS time is consistent with the time on the iBMC.</li></ul>
</div></div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_row25940988"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p449262018504">NTP</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p144921220115017">Indicates whether to enable or disable the NTP function of the iBMC. If the NTP function is enabled, the iBMC time can be synchronized with the NTP server.</p>
</td>
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<tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_row30419744"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_p48080227">Automatically obtain IPv4 address</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_p2184294">The iBMC automatically obtains NTP IPv4 information.</p>
<div class="notice" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_note13923122611519"><span class="noticetitle"> NOTICE: </span><div class="noticebody"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p179231526105116">If the mode for obtaining the IP address of the iBMC management network port is automatic, the NTP information obtaining mode must also be automatic.</p>
</div></div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_row83229419511"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p164225225119">Automatically obtain IPv6 address</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p144225213513">The iBMC automatically obtains NTP IPv6 information.</p>
<div class="notice" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_note84275215116"><span class="noticetitle"> NOTICE: </span><div class="noticebody"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p134219524519">If the mode for obtaining the IP address of the iBMC management network port is automatic, the NTP information obtaining mode must also be automatic.</p>
</div></div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_row3247117195218"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p113411318522">Manually set IP address</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p15341113185218">This allows you to manually configure the preferred and alternate NTP server IP addresses.</p>
<div class="notice" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_note19341813175213"><span class="noticetitle"> NOTICE: </span><div class="noticebody"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p8170143519527">If the mode for obtaining the IP address of the iBMC management network port is manual, the NTP information obtaining mode must also be manual.</p>
</div></div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_row9933136165616"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p1893318619563">Servers 1 to 3</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p19752135145716">Preferred NTP server IP addresses.</p>
<p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p15752151165717">The value is an IPv4 address, an IPv6 address, or a domain name.</p>
<div class="note" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_note9481190105815"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p112289525814">A domain name:</p>
<ul id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_ul1922814555811"><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li19228105185814">Contains a maximum of 67 characters.</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li182294565811">Contains digits, letters, hyphens (-), and periods (.).</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li11229185195810">Cannot start with a hyphen (-) or a period (.) or end with a hyphen (-).</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li1622914585810">Allows a maximum of 63 characters between any two periods.</li></ul>
</div></div>
<p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p13375163095817">Two options are provided. See the actual window.</p>
<ul id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_ul5375030155819"><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li17375630175816">Option 1: Three NTP servers are provided. In practice, the three server IP addresses take effect at the same time.</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li10375193012581">Option 2: Three groups of NTP servers are provided. In each group, the server on the left is the preferred one, and that on the right is the alternative one. In practice, the system selects server addresses based on the following priority rules:<ul id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_ul13375103017585"><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li1837583085820">The system selects a server address from each group.</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li337553055818">If both server addresses in a group are invalid, the system does not select any server address from this group.</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li1337503035815">If only one server address is valid in a group, the system selects the valid server address.</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li237523011582">If both server addresses in a group are valid, the system preferentially selects the IPv6 address. If both addresses are either IPv4 or IPv6, the system preferentially selects the preferred server address.</li></ul>
</li></ul>
<div class="note" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_note16643138105918"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p16448805914">The switchover between the active and standby NTP servers is related to the synchronization interval between the iBMC and the NTP servers (Minimum polling interval ≤ Synchronization interval ≤ Maximum polling interval). If no response is returned when the iBMC synchronizes time with the active NTP server for multiple times, the active NTP server is switched to the standby one.</p>
</div></div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_row1690982105616"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p49101219569">Minimum Polling Interval</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p159788327017">Minimum interval at which the iBMC synchronizes time with the NTP server, that is, the minimum polling interval of NTP packets.</p>
<p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p1997883219016">For example, if the value of minimum polling interval is set to 6, the minimum polling interval is 2 to the power of 6, that is, 64 seconds.</p>
<p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p997812322017">Value range: 3 to 17</p>
<div class="note" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_note3154175516010"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p815525511019">In iBMC V585 and later, this parameter can be customized.</p>
</div></div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_row138532239564"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p185302325615">Maximum Polling Interval</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p2942554120">Maximum interval at which the iBMC synchronizes time with the NTP server, that is, the maximum polling interval of NTP packets.</p>
<p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p20942352116">For example, if the value of maximum polling interval is set to 6, the maximum polling interval is 2 to the power of 6, that is, 64 seconds.</p>
<p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p99421459111">Value range: 3 to 17</p>
<div class="note" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_note149424519120"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p79429520113">In iBMC V585 and later, this parameter can be customized.</p>
</div></div>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_row116061719165615"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p13606519105614">Server Authentication</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p20308151411118">Indicates whether identity authentication is required when the iBMC communicates with the NTP server.</p>
<p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p530871414120">Default value: disabled</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_row9981415305"><td class="cellrowborder" valign="top" width="30.080000000000002%" headers="mcps1.3.2.2.1.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p1998515608">NTP Group Key</p>
</td>
<td class="cellrowborder" valign="top" width="69.92%" headers="mcps1.3.2.2.1.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p9984156012">When <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b127991154171019">Server Authentication</strong> is enabled, you need to upload the key to the iBMC for identity authentication during communication with the NTP server.</p>
<div class="note" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_note15217331511"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_ul1166111394112"><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li146617392111">You can download a key generator (for example, ntp-keygen) to generate the required key.</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li16661339217">Only key files generated by the MD5 and SHA256 algorithms can be uploaded.</li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li26611139616">For security purposes, periodically update the key.</li></ul>
</div></div>
</td>
</tr>
</tbody>
</table>
</div>
</p></li></ol><ol start="2" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232331_ol53579435"><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li1054912217543"><span>In the <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b82556595119">Region</strong> and <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b20255959181113">Time Zone</strong> drop-down lists, select the parameters to be set.</span></li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232331_li31795157"><span>Click <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b110682449411249">Save</strong>.</span><p><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p1392913571863">If a message is displayed, indicating that the operation is successful, the setting is successful.</p>
<div class="note" id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_note17527981873"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p952712817715">When performing time synchronization in the OS, run the <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b1750151523517">hwclock --utc -w</strong> command to ensure that the OS time is consistent with the time on the iBMC.</p>
</div></div>
</p></li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li112801257138"><span>In the <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b17965591412">NTP Settings</strong> area, set NTP information based on the parameter information in <a href="#EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_en-us_topic_0223232640_table66002877">Table 1</a>.</span></li><li id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_li024615218819"><span>Click <strong id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_b122284142811249">Save</strong>.</span><p><p id="EN-US_TOPIC_0000002165355592__en-us_topic_0000001829822749_p152463214811">If a message is displayed, indicating that the operation is successful, the setting is successful.</p>
</p></li></ol>
</div>
</div>
<div>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="en-us_topic_0000002200876325.html">System</a></div>
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